Conservator mechanism



April 1, 1941. H. J. FURBER CONSERVATOR MECHANISM April 1, 1941. H.J. FURBER CONSERVATOR MECHANICS Original File'd Oct. 9, 1935 6 Sheets-Sheet 5 Alva.

April 1, 1941. H. J. FURBER I CONSERVATOR MECHANISM Original Filed Oct. 9, 1935 p 1941. v H. J. FURBER 2,236,793

CONSERVA'FPOR MECHANISM Original Filed Oct. 9, 1935 6 sheets-esheet 4 C37 6.37 6

a it April 1, 1941. H. J. FURBER CONSERVATOR MECHANISM Original Filed Oct. 9, 1935 6 Sheets-Sheet 5 pm W .E Hm

- JNVENTOR April 1, 1941. H. J. FURBER CONSERVATOR MECHANISM Original Filed Oct. 9, 1935 6 Sheets-Sheet s INVENTOR.

Patented Apr. 1, 1941 2,236,793 CONSERVATOR MECHANISM Henry Jewett Furber, Silver Spring, Md.

Original application October 9, 1935, Serial No.

44.159. Divided and this 1937, Serial N0. 153,844

application July 15,

6 Claims. (Cl. 235-61) This invention relates to means for storing quantities developed at a calculating unit or a plurality thereof, in conservators remote and nor-\. mally dwconnected from the calculating units; and the present application is a division of my copending application Serial No. 44,159, filed October 9, 1935, as an extension, in part, of appli- -cation Serial No. 723,595 filed May 2, 1934.

An object of this invention is to provide means whereby a quantity, whether positive or negative, may be transferred from a calculating unit to a conservator or vice versa.

Another object of this invention is to provide means, as for example, manual controls, for setting up quantities for operation at the calculating I unit, and means to operate the calculating unit under optional control either of the ,quantities so set up at the controls, or, under control of one or more stored quantities, or under joint control of such setup quantity and a quantity so stored.

- Another object of this invention is to provide means for simultaneously operating a plurality of calculating units in similar or dissimilar computations, under control of the same conservator unit or conservator units. I

Another object of this invention is to provide means for comparing the numerical value of an accumulated quantity and a quantity stored at a conservator, and means to operate the calculating unit under control of the conservator.

With the foregoing and other objects in view, as may appear, the invention now will be described in connection with the accompanying figuresin which, with view to clearness, details superfluous to the matter of this divisional application, are, in so far as possible, suppressed.

Figure 1 is a general diagrammatic view of a calculating unit from which quantities may be transferred to a conservator andwhich may be operated either under control of a conservator or conservators, or by manual controls.

Figure 2 is a diagrammatic view of the manual controls at which quantities may be established,- and a state control.

Figure 3 is a diagrammatic view from the right of-the disk 10 shown in Figure l with various electrical conductors which pass from face to face.

Figure .4 is a diagrammatic view of the disk 40' at the transmitter 40 shown in Figure 1. I Figure 5 is a diagrammatic view of the lowe face of the disk 40 at the transmitter 40.

'- Figure 6 is a'diagrammatic view from the right V of the members shown in Figure 1 which transmit motion from the shaft 83 to the shafts "and 58a.

Figure "I is a diagrammatic plan view of the shafts 58, 58a with members and electrical connections appurtenant thereto.

Figure 8 is a detail view from the left of the armature 63a shown in Figure 7, with electrical connections. V

Figure 9 is a diagrammatic view from the right of a timing arm 18 shown in Figure 1, with terminals at which circuits may be closed.

Figure 10 is a perspective view from the right,

showing the pathway of the arm 18, between typical complementary terminals.

.Figure 11 is a diagrammatic View of typical conservatorsA and B, at which quantities may be stored.

Figure 12 is a diagrammatic view of three typical relays shown in Figure 11, with'the middle relay energized and the remaining relays deenergized.

Figure 13 is a diagrammatic view illustrating a plurality of conservators as variously connected with a plurality of calculating units.

Figure 14 is a diagrammatic view of the disks w, 40 40 shown in Figure 1, with electrical connections.

Figure 15 is a side view from the left of the ,armature 62" shown in Figure 1, operative in restoring an accumulator arm to zero position.

Figure 16 is a diagrammatic view from the left of the armature 69 shown in Figures 1 and 7, operative in clearing the calculating unit.

Figure 17 is a diagrammatic view from the right of a typical accumulator arm shown in Figure 1, with contacts at which it may close circuits, to comparator mechanism at a lever I, I", l', shown in Figure 2. Q

. Figure 18 is a diagrammatic view from the right of a typical quotient arm shown in Figure 2 with contacts at which it may close circuits.

Figure 19 is a detail view of an inking ribbon for recording positive and negative resultants in difl'erent colors, with solenoid to shift position.

Figure 20 is a typical accumulator arm 6! shown in Figure 1, with contacts at-which it may close circuits to recording apparatus or to the conservators.

All wheels disclosed in the above figures are toothed throughout, there being no mutilated- I i v 2 separately the circuits of the several wires, being similar in principle to the switch 8, shown in Figure 15 or Furber, 2,088,947. The direction of motion or transmission at rotary members, is indicated by arrows.

The term aecumulaltofl is employed to desighate collectively the members I, 'I", OI (Figure 1), said members individually being termed accumulator arms," as shown in Figures 1, 9,

General descri tion A quantity may be transmitted to the calculating unit (Figure 1) by means of electric circuits controlled by manuaiievers I, I", I'", 2', 2", 2" (Figure 2), or by equivalent devices, such as conservators A, B (Figure 11). A master switch I (Figure 2) is a state control which nes the of the operation which shall be pertor-med. The depremion or the push button RI, iniaddition and subtraction, P3, in multiplies.- tion and R3, in division Flgure 2), causes motion to be transmitted from an electric motor, M. (Figure 1), preferably in constant operation and revolving always in-the same direction, to the accumulator arms BI, II", B I' which are elements, respectively in progressiv denominational orders of the apparatus and correspond to hundreds, tens and units. Motion is likewise communicated to a progressively movable switch I or timing arm ll (Figures 1, 9) which measures the movement of the accumulator arms 6|, II', and arrests such members at angles oi displacement corresponding to quantities selected at the manual controls.

The relays 0., 0.12 (Figure 1) control the direction of motion communicated to theaccumulator arms SI, SI", II from the motor M. consistently, for example, with the positive or negative quality or the quantity transmitted.

The wheel 15 (Figures 1, 3) closes and breaks, through conductors which it carries, circuits es- The diflerentials D1, D1", are introduced, in order that the accumulator arms ti, M" may be responsive, each to quantities originating in its own corresponding denominational order, while simultaneously absorbing the carry-over from orders therebelow. from the units order to the tens, by the clutch 0.8" fixed to the sleeve 80" (Figure 1) through the gears M", N" fixed on the shaft '85 to the diflerential DI", and similarly from the tens to the hundreds order by the clutch 0,8" and members 84', ii, 6! to the diflerential Dj.

Positioning pins G8",- C.-8", well known to the art, are indicated in Figure 1, their purpose being to correct overdraft, and to block a lateral member of a planetarylearing when the other lateral member be alone in operation. Such positioning pins may be employed where needed.-

The orbits oi the accumulator arms 6|, 6|", M' are each divided into ten unitary steps 0! 36 corresponding to the numerals 0-9 (Figure 20).

Fixed on the motor shait III is the electric clutch CM. which, when energized, transmits motion through the armature ll floating in solidarity with the pinion 15 on the motor shaft to,

tablished at the master switch I (Figure 2) or closed at a push button P.'I,- P3, P3, in such select'l-ve order, as to bring the members thereby aflected, into operation in their proper turn. Said push buttons are introduced, in order that the calculating unit be brought into operation, only after all other controlsare properly adjusted;

Referring to Figure 1, the motor M, connected with the source ZZ through the wira s+, r, and preferably fin constant operation, imparts motion through the shaft 50, wheels II, 52, she-it I, wheels '4, u, 56 (Figure 6), armature I1 and the electric clutch 0.! to the shaft 58, on which aremounted the sleeves I, SI", 80", carrying respectively the diflerentially operated accumulator-armsII'JI JI".

Motion is selectively transmi ted to the sleeves 80', it", 80', on which are fixed the accumulator arms SI, 6|", H' (Figure 1) by electric clutches C.I', OJ", CJ' which are fixed to the shaft 58, and operate respectively on the armature l2, 8!", -B2'.". The sleeves 80', 8|", 6'' are carried by the shaft 58. The mature 82 is integral with the sleeve 80'. The armature G2" transmits motion to the sleeve 80'', through the composite idler 81" floating on the pivot i5" and thence through the diflerent'lal gearing Di", the middle member of which is integral with the sleeve N". The armature 82' imparts motion to to the wheel 18, iixed on the shaiit 11 together with the timing arm 18 (Figures 1, 9). The timing arm I8 synchronizes in movement with the arms BI, M", II', moving, for example, through an arc of 3.6, .while an accumu- \lator-arm ii, OI", 81'" moves through an arc of 36". It is the function of the timing arm 18 to close circuits, as it advances, which selectively arrest the accumulator arms SI, SI, 81, at angles. of displacement corresponding to the quantities established at the manual controlsshown in Figure 2 or at the conservators A.', B. (Figure 111) as will hereinatter be described.

Fixed together with the levers I, I", I' respectively, (Figure 2) on the axles 3', 3", 3",

are the cams, 4', 4", 4", which in normal position support the bridges 5', I", 5". Deflection of the levers I, I", I displaces the camsl',

l", 4", releasing, respectively the bridges I, I", I, which, falling through gravity, close circuits over thewires e', e", e', (Figures 2, 1) to the electric relays 0.2, 0.2", 6.2". These circuits parallel each the others, the relays 0.2, 0.2", 0.2" provoking, respectively, movement of the accumulator arms 8|, SI",- SI", by motor M. as presently described.

The circuit closed at the bridge 5' (Figure l) for example, when the lever I' is deflected, originates-at the source ZZ and passes through the wire r, the bridgei', the wire e' over the conductor It at the disk 40 (Figures 1, 4), presently described, and over the bridge 10" at the relay 0.4" (Figure 1) to the negative pole of the relay C.2"'. Circuit to the positive pole of the relay (3.2'" is momentarily completed at the bridge 49" through the wire a, connected with the source ZZ (Figure 1) through the wire s+ when, for example, the push button P.I, (Figure 2), is depressed. The relay 0.2" (Figure 1) is then held in stick, by circuit extending from its positive pole, over the bridges 'II', 12", carried by the relay 0.2"? and the wire 3+, back to the source ZZ. From the bridge 12", so closed at the relay 0.2", circuit through the wire h extends over the bridge I61 atthe relay C20, shown the sleeve 80', in similarmanner, through the with parts broken away in Figure 1, and in entirety in Figure 7, to the positive poles of the clutches 0.5, (3.5a, circuit to the negative poles Carry-over is transmitted of which may be selectively controlled by the master switch 1 (Figure 2) or otherwise, as hereinafter described. Circuit is closed in the accumulation of a positive quantity to the negative pole V f the clutch 0.5 (Figure l) which transmits motion in clockwise direction to the accumulator arms 6|, 6I", 6I. During the accumulation of a negative quantity, circuit is closed to the negative pole of the clutch 0.5a; and the movement of the accumulator arms BI, BI", BI is reversed. The clutch 0.5a (Figures 1, 7) is fixed on the shaft 58a. The armature 51a of the clutch 0.5a floats on the shaft 58a. The armature 51 of the clutch 0.5, floats on the shaft 58. The wheel 56 meshes with the armatures both 51 and 51a (Figure 6) Fixed respectively to the shafts 58, 58a, are the wheels 59, 59a (Figures 6,

when the clutch 0.5 is energized and the shaft 58 is rotated by the motor in clockwise direction, the shaft 58a is rotated in direction opposite thereto; and when the clutch 0.5a is energized, and the shaft 58a is rotated in clockwise direction, the shaft 58 is rotated in direction opposite to clockwise. The shaft 58a carries transmission largely similar to that carried by the shaft 58; and is provided with an additional clutch 0.8a shown in Figure '7 and with broken shaft in Figure 1, which operates as presently described.

When energized, the clutch 0.5 (Figures 1, 7),

in accumulation of a positive quantity, clutchesthe armature 51 constantly revolving, and receives motion in clockwise direction, which it lmparts to the shaft 58, on which are fixed the electric clutches 0.1", 0.1, 0.1. Retraction of the plunger of the relay 0.2 (Figure 1), for example, as herebefore described, closes, at bridge 13", a circuit through the wire 7" to the clutch 0.1. This circuit originating at the source ZZ, passes through the wire 8+ over the bridge 13 through the wire 7" to the clutch 0.1 and, thence, through the wiresback to the source ZZ. The clutch 0.1 so energized, clutches and rotates its armature 62", which is fixed together with the accumulator arm 6I", on the sleeve 60!!! In the same manner and through similar circuits, the relays 0.2", 0.2 controlled respective- 1y by the levers I, I, close circuit at the bridges 13", 13', through the wires 7", 1, on the clutches 0.1, 0.1 (Figure 1) whose negative poles are connected with the wire s-, and which transmit, respectively, motion to the accumulator arms 6i", 6|, through the right lateral and middle 4 '7) in mesh one with the other, to the effect that ried in acable bb, to the levers I, I", I (Figures 1, 2) According to the angle at which such levers I, I", I, be manually deflected, circuits are closed upon selected 1 wires (Figure 2) whence currentflows through the levers I, I, I and the wires 0, of, 0 (Figures 2, 1) respectively, to the relays 0.4, 0.4", 0.4", the connections being similar at all the levers I, I, l!!!- Referring to Figure 9, the timing arm 18 is shown as carrying a conductor 19, which, in addition and subtraction, closes circuit from the wire a to the wires ti -b represented as descending towards the axis of said timing arm in the form of spirals and intersecting wires (l -a which respectively may be closed, in multiplication, to the wires M by the conductors 18 -19", at progressive contacts. The angle of displacement of said timing arm, when closing any certain wires, say wire a on a wire, say wire 11, corresponds to the multiple of the index numerals 2 and 4 which identify respectively the two said wires, as presently described.

The moment at which the relays 0.4, 0.4, 0.4 shall break, respectively at b ges 10,

'10", 10", circuit to the relays C.l' fi.2", 0.2",

is timed by the timing arm 18 (Figures 1, 9, 10) rotated on the shaft 11.

The timing arm 18 revolving, may close circuits between various pairs of terminals fixed, at the sides of its pathway upon benches. The position and the pathway of arm 18, between typical benches 80, 80 is indicated diagrammatically in Figure 10.

Extensions of the wires b -b (Figure 9) emerge from the cable bb, in recurrent series separated one from another, by neutral spaces which correspond to'zero, from any one of which neutral spaces the timing arm 18 may enter on an operation, of addition, subtraction or division.

Assume, as an example, that the positive quantity 598 were to be transmitted to the accumulator arms 6|, 8|, 6I" (Figure 1). The lever I would be manually, deflected, closing circuit through the wire e at the bridge 5 (Figure 2) to the relay 0.2 (Figure 1),; and the circuit members of the differential gearings D Df.

The left lateral members of these differential gearings float respectively on the sleeves 60, and receive the carry over, as above described, from the next lower denominational orders, permitting thereby, the simultaneous operation of all orders of the calculating unit. The relays 0.2, 0.2, close, at the bridges 12", 12, circuit through the wire it to the clutch 0.5, in common with the realy 0.2", or in the accumulation of a negative quantity involving reversed motion, to the clutch 0.5a.

The accumulator arms GI, BI, 6I when set in motion, are severally and respectively arrested 'at angles of displacement determined by the levers I, I, I, and jointly in multiplication by the levers 2', 2", 2" (Figure 2). Extending past all levers I, I, I are the wires b -b. The wires b -b are shown as connected with terminals in the orbit of the timing arm 18 and as car- (Figures,2, '1) to the relay 0.4. Similarly, by manipulation of the' levers I, I (Figure 2),

circuits are closed respectively through thewires e, e, to the relays 0.2,. 0.2 (Figure 1), and from the wires b, b (Figure 2) through the wires 0, c (Figures 2, 1) to the relays 0.4, CII'.

The master switch 1 (Figure 2) is manually placed in position closing at the contact plate 9, current from the wire aon the wire dr leading over the bridge 98 at the relay 0. to the negative pole of the clutch 0.5, whose positive pole is connected through circuit of the wire it already traced, back to the source ZZ. At the contact plate I2, circuit already traced, is closed byth e master switch 1, from the wire s+ to the wire a (Figures 2, 1), leading to the exterior segized momentarily through the wire g, retract their plun'gers and are held in stick completing circuit through the wire it already traced, to the 4 clutch 0.8, and closing circuit, likewise. through the wire 1', 1", 1', to the clutches 0.1, (3.1", 0.1", as above desc bed, The clutch (2.8, being energized, motion clockwise direction is imparted by the motor M. through the transmission already described, to the accumulator arms 8|,

I I r, I r I An extension of the wire g passes over the lower bridges of the relays 0.23, C.22 to the positive pole of the clutch C.2l (Figure 1), from the negative pole whereof circuit is completed through the wire sback to the source ZZ. So energized, the clutch C.2l clutches the disk 14 and imparts initial motion through the disk ll, 18, and shaft 11 to the timing arm 18 (Figure 9) rotated invariably, in clockwise direction.

when the timing arm 18 has advanced five steps, circuit is completed by the conductor I8 (Figure 9) from the wire a to the wire I) closed at the lever I (Figure 2) and through the wire c' from the lever I to the relay CA (Figure 1). which, retracting its plunger, breaks at bridge 18' circuit over the wire a to the relay 0.2 arresting thereby, as above described, the accumulator arm ii at an angular displacement of five steps. The lever i' (Figure 2) closing circuit through -the wire e' to the relay CA' (Figure 1) from the wire I; the accumulator arm 6l'" is arrested at an angular displacement of eight steps, when the timing arm 18 (Figure 1) reaches the terminal of the wire b. Circuit is still closed by the relay 0.2" on the clutches C5, C1", and the accumulato arm 6i" maintains its motion. As the timing arm 18 passes to the terminal of the wire I), circuit is closed by the conductor 18 through the wires 0, b, c" to the relay CA"; and the accumulator arm II" is arrested at an angular displacement of nine steps. The operation thereby is completed, the accumulator arms 8|, II", t l reflecting the quantity 598. Current through the wire h to the clutch C.5 now being wholly interrupted, the armature 81 (Figure 1) is released by the clutch 0.5; and the transmission of motion from the motor M is broken to the shaft 58.

The push button P.l is retained, during the above operation, by the solenoid 0.28 (Figure 2). When circuit is broken through the wire h, the relay 0.28 releases the push button.P.l which is restored to normal position by the spring 8.84. The circuit of the wire h has been already traced. The negative pole of the solenoid C.28' is connected with the wire r back to the source ZZ.

In order that the timing arm 18 (Figure 9) may not be arrested when current through the wire 9 falls, but may be advanced to a neutral posi-- tion preparatory to a future operation; circuit to the clutch C.2l after its initialdisplacement, is sustained by current passing through an extension of the wire a (Figures 2, 1), a conductor of pinion I8, wheel so e 22, through the wire s+.

In setting up a negative quantity at the accumulator arm 8|,8l", 8l' (Figure l), the master switch I (Figure 2) is placed in position, The operation then involves the same mechanism and circuits as in setting up a positive quantity except that at the contact plate i2, circuit is closed from the positive pole of the source ZZ, to the wire i leading over the bridge 288 depressed at the relay C. and the bridge Iii, raised, at the the relay C. (Figure 1) which breaks, at the bridge 88, the circuit of the wire dr to the clutch 0.5, and closes at the bridge 98, the circuit of the wire dfl to the relay 0.5a, reversing, thereby, the motion of the members 6i, 8!", 8l". The negative pole of the relay C. (Figure 1) is connected through the wire sback to the source ZZ. The relay C.l2 is energized by the extension of the wire dr hereinbefore traced, which leads to its negative pole. The positive pole of the relay C12 is connected with the The push butt 11 RI (Figure 2) is, asbefore depressed and the negative quantity is accumulated at the accumulator arms 8|, 6|", 6|"' (Figure 1).

Movement of the timing arm 18 (Figures 1, 9) is maintained, as in addition, until it reaches a neutral position between two series of b terminals, by current through the extension of the wire a. passing through a conductor of series 8| (Figure 3) carried by the wheel It to the clutch C.2| (Figure 1).

As the accumulator advances from zero position in the accumulation of positive quantities, positive carry over is transmitted, during each successive tenth step displacement of the accumulator arms 8l', 8|" (Figure 1) and borrowing is effected at successive first step displacements in opposite direction, so long as, at the accumulator, a positive quantity be latent. Means are provided whereby the transfer clutches 0.8", 0.8 at shaft 58, shall, similarly, as the accumulator advances from zero position in contraclockwise direction, in the accumulation of negative quantities, transmit a negative carry-over at ,each successive-tenth step displacement of the series 8| (Figure 3) at the wheel 18 (Figure 1),

thebridges raised 01' the relay 0.28, the bridge depressed of the relay (3.22 to the clutch (3.2!, whence it passes through the wire 3- back to the source ZZ. The conductors 8| (Figure 3) are of the necessary are to carry the timing arm 18 to an intermediate neutralposition between two series of the b terminals in the 'orbit of the conductor 18 (Figure 9). In order to obviate the necessity of restoring the arm 18, in operations of addition, subtraction and division, to the normal position shown in Figure 9, preparatory to I each operation, the series of b terminals are, as

above described, recurrent throughout the entire orbit of the conductor 18.

by the motor M through accumulator arms 8l', 8|", so long as a nezative quantity be latent at accumulator; and borrow at successive first step displacements in relatively opposite direction. This now will be explained.

Referring to Figure '7, the shaft 58a carries the sleeves a, 80a", 88a' which are rotated respectively by the clutches 0.1a, 0.1a", CJa' simultaneously with the sleeves 88', 88", 88' (Figure 7) carried by the shaft 58 and rotated the clutches C1, C1", Circuit is closed simultaneously at the bridges 13', 12a, to the clutches CJ, 0.1a; through the wires 7'", 1a" to the clutches Cl", (3.10"; and circuit is closed simultaneously, at the bridges 13", 1811', through ,the wires j, :iaf', to the clutches CJ', 0111', the negative poles of the clutches C.|', 0.1a, 0.1", 0.1a", 0.1", CJa' being all connected through the wire swith the source ZZ.

The armature of the clutch 0.1a is the wheel 821; (Figure?) which floats on shaft 58a and transmits motion to the sleeve 68a, through a composite idler not shown but similar to the idler 1' (Figure l), and the differential Dfa' (Figure 7), the middle member of which is fixed to the sleeve 80a. The armatureof the clutch C10" is the wheel 82a", which floatsv on the shaft 880. 'and transmits motion to the sleeve 800." through relay C.i2, to the positive pole of mam V in direction opposite to clockwise, closes a composite idler similar to idler I!" (Figure 1), and the dlflerential Dfa" (Figure 7), the middle member of which-is fixed to the sleeve Ila". The armature oi the clutch CJa' is the disk 620' fixed to the sleeve Gla'.

The carry-over, at the shaft Ila; is transmitted from the sleeve 60a! to the sleeve 60a", by the 'clutch CJai integral with the sleeve 8011", the armature 63w floating n 1 and transmission similar to the pinion 64" (Figure l), shaft 65", and the pinion 68", to the left lateral member of the diflerential Dja" (Figure '7) which floats on the sleeve 60a". The carryover is in like manner transmitted from the sleeve 80a" to the sleeve 60a, by the clutch 0.8a" fixed to the sleeve Mai, and ton similar to the transmission 64, 85', 08" (Figure 1), and the differential Dfa' (Figure 7), the left lateral member of which floats on the sleeve 00a. Integral with the sleeve 60a is a clutch C30 (Figures 1, 7) similar to the clutches 6.80", 0.80"" which transmits carry-Over to a denominational order consisting of a single memher, the armature 63a. This order is higher than the highest order yet described and corresponds to thousands, in the present drawings. The armature 880' carries a conductor ll (Figures 7, 8) which governs duplicate circuits to the clutches 0.8a, C10", 0.80".

Th negative pole or the clutch 0.811 is connected with the source ZZ, through the wire 3-.

The negative poles or the clutches 0.8a", CJa, 0.8", 0.8", are connected with the wire-deleading over the lower bridge at the relay C. to the source ZZ.

When the calculating unit (Figure 7) is in zero position, the clutches. 6.8", 0.8", are in open circuit, the circuit of the wire it leading to the positive contact bands 36", 36f", being broken at the bridge 92*, and the circuit of the wire d to the positive contact bands 38", 33' being broken at the bridge 92*. The clutches 0.8", C.8"' may then be displaced from zero .in either direction without borrowing and thereby displacing higher orders. The contact bands 36", 36", 38", 38, extend each through 36 of arc.

When the calculatingunit is at zero, circuit leads to the clutches 0.811, (2.80", 6.80" through the wires both do, closed on the wire s+ leading from the source ZZ, at the bridge 82',

and through the wire da', closed on the wire s+ at the bridge 92 The terminals of wire do are in such position relatively to the positive contact bands 36a, 36a", 36a"? which extends throughv 36,that if a clutch C.8a', C.8a", C.8a' be displaced from zero in direction opposite to clockwise, as .in the addition or positive quantities, a quantity is borrowed throughout ascending orders of the calculating unit at shaft 58a, and the armature 63a (Figures 7, 8) is displaced 36" in direction opposite to clockwise.

The terminals of the wire do are in such position relative to the positive contact bands 38a, 38a", 3811", which extend through 36"., that if a clutch 0.8a, 6.8a", C.8a' be displaced from zero in clockwise direction, as in the subtraction of a positive quantity, a quantity is borrowed throughout ascending orders at shaft 58a and the armature 63a is displaced 36 in clockwise direction, (clockwise movement in Figure 8 being towards the left, because of viewpoint).

So long as operations remain within the zone of positive quantities, the armature 63a, discircuit from'the wire s+ through the conductor llicarrled b! the armature lid, to the wire d. 80 long as operations be within the zone of negative quantities, the armature 63a, displaced in clockwiseidirection,v closes circuit from the wire 8+ through the conductor El, to the wire 11'.

When the wire it is closed by the conductor Ill, circuit is completed to the relay (3.25, the negative pole oi which connected through the wire back ,to the source 2th. The relay C28 so energized retracts the plunger 0|, common to the relay 6.2!, and closes at the bridge 92', circuit through aniextension of the wire at to the clutches 0,923.0, the contact bands 3'', 36" at which are replaced relatively to the terminals 0! the wired. that the clutches CJ", 6.8" are energized at each tenth step displacement clockwise in every revolution. and at such tenth step displacement transmit a positive carry-over. At

I each first-step displacement in opposite direction within the zone of positive quantities the clutches C3", 01", borrow. So long as operation remainswithln the zone of positive quantities, the wire d is active. I

When the wire it is closed by the conductor 80, circuit is completed to the relay 0.28, the negative pole of which is connected through the wire rback to the source ZZ. The relay 0.2! so energized retracts the common plunger Ii; and closes at the bridge 02 circuit through an extension of the wire d'to the clutches 0.8", 0.0", the contact bands 38", 38' at which are placed relatively to the terminals of the wire d, that the clutches G3 0.8", are energimd at every tenth step displacement in every revolution opposite to clockwise, and at such tenth step displacement transmit a negative carry-over. At

each first step displacement clockwise, within the zoneoi negative quantities, the clutches (3.8", 0.8", borrow. So long as the operation remains within the zone of negative quantities, the wire d is active.

When the wire d is'active, circuit is broken at the bridge 92 from the wire 8 to the wire do, which remains open, and is closed at the bridge 92' from the wire d through the wire do to the clutches 0.8a, 0.8a", 0.80", which,'so long as the operation remains within the zone oi positive quantities, borrow while the clutches C3", C.8 are transmitting positive carry-over; and transmit carry-over, while the clutches (2.8", Cjf",

borrow, When the wire 41' is active, circuit is broken at the bridge 82 from the wire 8+ to the wire do, which remains open, and is closed at the bridge 91 from the wire 11' through the wire do to theclutches C.la', Clo", C.la"', which so long as the operation remains within the zone oi negative quantities borrow while the clutches 0.8", 0.8" are transmitting negative carry-over; and

transmit carry-over additively while the clutches transmitted to the armature lia', which is therei by restored to normal position, throwing the wires d, d, and the clutches CJ", CJ'" again into 2, 2", 2" (Figure Multiplication The multiplicand is normally set up at the levers I", I", and the multiplier at the levers 2); the master switch I is placed in position x or :c accordingly as the factors be similar or dissimilar in quality; and the push button P2 is depressed. Accumulation of the resultant at the arms 8|, 8|", '8|"' (Figure 1) is, in principle, substantially similar to that above described, save asmodified by the timing arm I8 (Figuresl, 9) which, in multiplication selectively closes circuits to the wires b -b from the wires -a.

Closed in multiplication by the master switch I through the contact plate 8, is circuit through the wire dr (Figures 2, 1), which energizes the relay CM, and leads normally over bridges oi the relays J8, C.|3 and bridge 98 depressed at the relay 0.| Ito the negative pole of the clutch 0.5. An extension 01 the wire dr leads also to the negative pole of the relay C.|2. Closed by the master switch I (Figure 2) at the contact plate I2, is circuit through the positive wire 0 (Figures 2, 1) which is progressively closed at the disk 40 (Figures 1, 5) or the multiple transmitter 40, on the wires 0', 0", 0" leading overbridges at the relays 0.28, 0.28", 0.28" (Figure 2) to the levers 2, 2", 2. Closed likewise by the master switch I at the contact plate I2, is

circuit from the wire s+ to the wire 10 (Figures 2, 1) leading through the conductor 82 at the wheel I6 (Figures 1, 3) to the relay 0.22 (Figure l) and also circuit from the wire s+ through the wire 1: (Figures 2, 1) leading through the conductor 81 at the wheel 18 (Figures 1, 3) and the wire a: (Figure 1), to the positivepole of the clutch 0.26 (Figure 1).

Depression of the push button P1 (Figure 2) completes circuit through the positive wire 17, which directs initial impulse through the conductor 85 (Figure 3) at the wheel I8 (Figure 1) and the bridges 48', 49'', 48", to the relays 0.2, 0.2", and 0.2". Operation follows, the push button being held in depressed position by the solenoid 0.28" (Figure 2) as presently described.

Let it be assumed, that the timing arm 18 describes an arc of 3.6, corresponding to a unitary space displacement or the accumulator arms 8|, 6|", 6|"' (Figure 1), when the timing arm I8 advances to one .and to another of the'terminals of the wires Il -b which may be closed on the wire a through the conductor I8. The terminals of the wires Ii -b at their intersections with the wire a in the orbit of the conductor I9, are at arcs twice as great; the terminals of the wires b -b at their intersections with the wire a are at arcs three times as great; and thus progressively, the terminals of the wires b --b which may be closed, through the conductor 18', on the wire a, being at arcs of 32.4", nine times greater than the arcs between the terminals at which circuit may be closed by-the conductor If, accordingly, the are described by the arm 18 in advancing to one and to another otthe intersections of the wires b -b with the wire (1', correspond to one step displacements of the accumulator arms 8|, 8|", 8|"' '(Flgure1); the are described by the timing arm I8 (Figured) eommodate such operation.

in advancing to one and to another of the intersections of the wires b '-b' with the wires 0' being twice as great, would correspond to two step displacements of the accumulator arms 8|, 8|", 8|" (Figure 1). Similarly the are described by the timing arm 18 (Figure 6) in passing to one and to another intersection of wire a, being three times as great, would correspond to three step displacements of the accumulators 8|, 8|", 8|"' (Figure 1); and the arcs to and between intersectionsat wire a being nine times as great, would correspond to a displacement of the accumulator arms 8|, 8|", 8|""of nine steps. I

Therefore, it the wire a be closed at the lever 2' (Figure 2) and the wire I: be closed at the lever I, the accumulator arm 8| (Figure 1) would be displaced four steps, corresponding to the numeral 4, when arrested by completion oi the circuit by the conductor II (Figure 9) to the V relay 0.4 (Figure 1), as the timing arm 18 reaclgies the intersection of the wires a, I) (Figure Similarly, it the wire a be closed at the lever 2" (Figure 2) and the wire b be closed at the lever the accumulator arm ll" (Figure 1) would be advanced eighteen steps, when arrested at completion of circuit to the-relay 0.4" by the conductor 18 at the intersection oi the wires a, .b' (Figure 9). Hence, the step displacement of an accumulator arm is proportionate to the productot the serial numbers which identify the a and b circuits selected at the control levers (Figure 2) and completed at the timing arm I8 (Figures 1, 9).

Rotation of the timing arm II, initiated by the wire a, is maintained until it reaches normal perpendicular position as representedin Figure 9, by current through wire 10 (Figures 3, l) to the positive pole oi' the clutch 0.2I (Figure 1). This circuit originates at the source Z2 and passes through the wire 3+ (Figures 1, 2) contact plate II, the wire w, the conductor 82 at wheel I.

(Figures 1 3), the bridge at the relay 0.22 (Figure 1) energized through the wire 10, to the clutch 0.2L The negative poles of the relays both 0.2l, 0.22 are connected through the wires 8"" with the source ZZ. The purpose of the relays both 0.22 and 0.22, is to prevent interference or circuits through the wiresg, a, and 10,-each lot which, though in diilerent instances, closes circuit on the clutch 0.2

Assume, consistently with the above, that the operation be, 26x23=598. In copending application Serial No. 44,159, means are disclosed whereby column shift is so eflected, that the first numeral of the product-598 automatically shall fall in the hundreds column, with the factors set up at the tens and units orders 01' thelevers I", l, 2', 2", 2" (Figure 2). For brevity, in present illustration, the factors may, however, be set up at the hundreds and tens orders of said levers, in order that the orders or the product may properly be placed, the disks 48' and ll being shown in-Figures 4 and 5 in. position to ac-.

When the multiplicand 26 has been multiplied by 2, the first numeral of the multiplien-and immediately before the timing arm II-.reaches the normal position shown lnFigureQ, circuit is closed by the conductor 81- at the disk II (Figures 1, 3) through the wires :2", x (Figures 2, 1) to the positive pole of the clutch 0.28 fixed to the shaft 58 (Figure 1). This circuit-originates at the source Z2, and passes through the wire s+ (Figures 1, 2) the Contact plate a: (Figure 2).

3), an wire a, to the clutch 0.28 (Figure 1) whence it passes through the wire sover the bridge 96 at the relay 0.), back to the source ZZ.

The clutch 0.26 so energized and in continual rotation, clutches the transmitter 48 which floats upon the shaft 53, and operating onthe wires o", 0" (Figures 1, 2, as presently described, shifts current from the wire 0, after the first partial operation, from the lever 2' closed on the wire a corresponding to the first numeral of the multiplier, to the lever 2", closed on the wire a corresponding to the second numeral of the multiplier. Simultaneously, the transmitter 40 (Figure 1) switches at the disk 48' (Figure 4) the current of the wire e together with the current of the wire a, both closed by the lever I (Figure 2) and corresponding to the first numeral of the multiplicand, from the relays 0.2,

0.4, respectively, to the relays 0.2", 0.4". In

similar manner, at the disk 40' (Figure 4) cur-' rent of the wire e", together with current from the wire 0", closed by the lever I and corresponding to the second numeral 01' the multiplicand, are switched respectively from the relays- 0.2", 0.4", to the relays 0.2", 0.4" (Figure 1). Through the action of the transmitter 40, the operation of multiplication is accordingly shifted to the next lower orders of the calculating unit corresponding to next lower denominations.

The disk 40 carries at its lower face (Figures 2 1, 5), a conductor 4| to which is attached a contact 42. Closed on the conductor 4| is the wire 0 (Figures 5, 1). Closed successively by the contact 42, as the disk 48 is rotated, are the wires 0', o", 0", which lead respectively over the upper bridges at the relays 0.29, 0.28", 0.29" (Figure 2) normally closed to the levers 2', 2", 2". The arc of the conductor 81 at the wheel 16 (Figures 1, 3) is exactly sufficient to sustain current to the clutch 0.26 (Figure 1) while the clutch 0.28 displaces the transmitter 40 from the position at which the contact 42 (Figure 5) closes on the wire 0, to successive positions at which it closes on the wire 0", and then on the wire 0'. Circuit is thereby shifted downwards after the first partial multiplication, from the lever 2' (Figure 2) and wire a corresponding to the first numeral of the multiplier, into connection with the lever 2" and the wire a corresponding to the second numeral of the multiplier and eventually, were there three numerals in the multiplier, likewise to an a wire closed at the lever 2".

The disk 40' (Figures 1, 4) carries aseries of concentric conductors Ni -[6 On these conductors at the faces of the disk 40', float terminals of the several wires 0', e, c", e", c', e', through which, in normal position current is directed to the relays 0.4, 0.2, 0.4", 0.2", 0.4", 0.2" (Figure 1) through extensions of the wires c,e',c",e",c", c", leading respectively from the opposite extremities of the concentric conductors IS -I6 These last said terminals are spaced at arcs, which permit current through the several wires 0', e, c", e", c'", e, to be switched respectively, to the corresponding relays of next lower orders, as the clutch 0.26 (Figure 1) displaces progressively the transmitter 48.

Circuit 0 being shifted, by the transmitter 40 at the disk 4|! from the lever 2' (Figure 2) closed onthe wire a corresponding to the first numeral of the multiplier 23, to the lever 2" closed on the wire a corresponding to the second numeral thereof, and the c and e wires having been switched at the disk 48' to the corresponding relays of next lower orders, permitting the de-.

flected levers I, I", to operate respectively thereon: the wheel 18 (Figure 1) revolving, again momentarily completes, at the conductor 88 (Figures 1, 3) circuit through the wire 9 (Figure 1) to the relays 0.2", 0.2"; and the multiplicand 26 is multiplied by the numeral 3, the push button P.2 (Figure 2) being held depressed by the solenoid 0.28".

The circuit of this solenoid 0.28" originates at the source ZZ (Figure 1) and passes through the wire 0 (Figures 1, 2) the conductor 4| at the disk 48 (Figures 1, 5), the wire 3: (Figures 1, 2), the bridge 32", the solenoid 0.28" (Figure 2), and thence back through the wire 3- (Figures 2, 1) to the source ZZ. Circuit to the solenoid 0.28" remains active, until multiplication is finally completed, when, after successive shifts at the transmitter 40 (Figure 1), the wire 11 (Figure 5) is thrown into open circuit, as current from conductor 4| advancing, fails. Circuit to the solenoid 0.28" is thereby broken and the push button R2 is restored to normal position by the action 01' a spring 8.34" (Figure 2) The second partial operation having been initiated by impulse through the wire a as circuit is again completed through the conductor (Figure 3) to the relays 0.2, 0.2" (Figure 1), the wheel 16 (Figure 1). and the timing arm I8 enter on a second revolution; the wire a corresponding to the second numeral 3 of the multiplier, in turn operating on the wires b, b, corresponding to the multiplicand 26. As the timing arm 18 (Figures 1, 6), advancing, closes through conductor 19 the wire or upon the wire b the accumulator arm 6|" (Figure 1) is arrested at an advance of six steps, which added to its original net displacement of two steps give the accumulator arm 6| an angular displacement of eight steps. The accumulator arm 6|"' is in turn arrested, as the timing arm '18 reaches. the terminals of the wires a b (Figure 6) and, having described a complete revolution, rests at a net displacement of eight steps, the ten units corresponding to the complete revolution of the accumulator arm 6| being transmitted as carry-over to the accumulator arm 6|", which is thereby advanced an extra step, The final displacement of the acreflects accordingly, 598, the product. This quantity may be transferred to recording mechanism as disclosed in copending application Serial No. 44,159.

Should a zero appear in the multiplier, and consequently a partial multiplication be suspended; transmission of motion from the shaft 53 (Figure 1) tothe shaft 58, is interrupted, by breaking the circuit of the wire h to the clutch 0.5. This is accomplished by means of the relay thence through the wire a over the bridge at the relay 0.3 (Figure 1) to the positive pole of the relay 0.|, the negative pole whereof is connected through the wire sback to the source ZZ. If the wire a be closed at the lever 2', 2", 2" (Figure 2) which at the time be receiving current from a wire 0', o", 0", the relay 0.| (Figure -1 )-breaks at the bridge carried at the upper extremity of its plunger, circuit through the wire 72. to the clutch 0.5, or, as it may be in negative multiplication, to the clutch 0.5a. If there be successive the zeros in the multiplier, actionat the relay CJ, is repeated. r The relay CJ shown in Figure 1,-is active, only when a quantity stored in a conservator enters as a factor, as described presently herein,

In order to insure the presence or the arm I! in normal perpendicular Figure 9, when initiating an plication, the push button PA (Figure 2) is manually depressed. It is held in such position by the solenoid G3! on which circuit is thereby closed and which is held in stick, through a current which. originating at the source ZZ (Figure 1) passes through the wire 's+ (Figures 1, 2), bridge at the push button PA (Figure 2), the wire 2 (Figures 2, 1). conductor 83 (Figure 8), at the wheel 10 (Figure 1) to the chuich C. and to the solenoid C10 (Figure 2), the negative poles whereof, are connected through the'wire with the source ZZ (Figurel).

mission H, II, I8, 11, until, as the timing arm The clutch Oil, so,

relay 0.2. (Flgure2) whose position as shown in operation in multienergized, transmits motion through the trans- 18 reaches normal perpendicular position (Figure 9), circuit to the clutchCJl and the solenoid 0.2. is broken at the conductor 88 (Figure 3), arresting thereby the timing arm I! in normal perpendicular position (Figure 9), and releasing the push button FA (Figure 2).

In order to insure that the transmitter ll (Figure 1) be restored to normal position, the conductor 48 (Figure carried at the lower face or the disk 40 positive pole of the the shifts of circuit incident to the operations of multiplication have been completed, such final shirt carries the extremity of the conductor 43 into contact with the circuit so closed by the at the source ZZ (Figure the wire s+ and the conductor ll (Figure -5) to the positive pole or the clutch 0.28 (Figure 1), the negative pole whereof, as already stated, being connected, through the wire r, back to the source ZZ. The clutch 0.26 so energized, clutches the transmitter ll and rotates it onward tenormal position, the arc of the conductor ll (Figure 5) being such that when the transmitter reaches normal position, circuit to the clutch C tails.

In operations of multiplication, when a negative factor enters with a positive, the master conductor ll originates switch I (Figure 2) is placed in position 1:,

In this position the master switch I closes the same circuits, as in multiplication of quantities or similar quality, except that through the wire 1 a positive current is closed at the contact plate i2 (Figure 2), to the relay C.l I, over the bridge 20!, and the bridge Ill at the relay C12, which is energized, as hereinbetore described, by the wire dr. The relay C. so energized switches at the bridge 99, current from the wire dr-to the clutch Clawhich .transmits motion in direction opposite accumulator arms ll, Bl", Bl' (Figure 1). The operation is similar in all particulars to the multiplication of two positive quantities or as-it might be of two negative quantities, except that the direction or motion of said arms is reversed,

carry-over, as heretofore described, being effected by the transfer clutches CJ'. 0.8", during each tenth step and borrowing during each first step, in whichever direction from zero position the accumulator be displaced.

fixed terminals 44. The

1), and passes through Figure 5), closes circuit on the clutch GIG-(Figure 1). when negative pole is connected with the wires serves to close circuit mm the positive wire in over the bridge 13" at the push button 2.: 'to the solenoid c. which is cuits at the push buttons P1, P1, are similarly operative in the computations they respe vely control.

Division Adividend having been developed at the accumulator II, ii", ll' (Figure 1), the divisor is set up at the levers i', i", V". Assume the operation 598+28=23, in which the factors both are positive. 44,159, means are provided whereby the divisor 2! may be set up at the levers l", i' corresponding to tens and units, thevoperation then being automatically shifted so as to cause the divisorto operate first upon the hundreds and tens orders or the dividend. To like eflect, in order that the divisor 26 first operate upon the hundreds and tens orders of the dividend 698, the

divisor 26, for purposes of present illustration,

' or according to the positive or negative quality of the divisor, irrespective ct the quality of the dividend which conceivably may be unknown; and the'push button P3 is depressed, imparting to the relays 0.2, (3.2", C.2"' (Figure 1) an initial impulse through the wire I? closed at the wheel 1 by a conductor oi! the series It (Figure 3).

Displacement oi the master switch I (Figure 2) as above specified, closes at the contact plate I, circuit oi! the wire r from the source ZZ (Figure 1), to the wire u (Figures 2, 1) leading through a conductor of series-I8 at the wheel'" (Figures 1, 3) over the bridge 84 when raised, at the relay (2.", and over thebridge II or thebridge I at to clockwise, as hereinbetore described, to

The product is automatically recorded and its I quality distinguished, by mechanism disclosed in co-pending application Serial No. 44,159. The

the relay 0., to theclutch either CJa or CJ, according to the quality or the dividend, as presently explained. The wire it also closes circuit at the bridges ll, 91, when raised, to the relay CJI, which it may hold in stick; and at the bridge 9! raised, may close circuit to the negative pole oi! the relay 0.30 (Figure 2) which is operative in developing the quotient, as presently described.

Closed by the master switch plate ll (Figure 2), is the wire 1: leading from a comparator presently described. to the wire dp (Figure 1) which may impart initial impulse to the relay C. M.

Closed by the master switch at the contact plate It (Figure 2) is circuit from the source ZZ through the wire s+ to the wire a (Figures 2, 1) leading, as in addition and subtraction, to the timing arm'" (Figures 1, 9) and to the relay 0.23, and clutch CJI (Figure 1).

Closed likewise by the master switch I at contact plate l2 (Figure 2), is circuit from the wire s+ to the wire :1: (Figures 2, 1), which leads through the conductors '8 (Figures 1, 3) to the In copending application Serial No. I

I at the contact clutch 0.26 (Figure 1); and closed a the Y conductors I24", I24', similar thereto.

dp, closed-by the master switch 1 at the contact contact plate I 2, is circuit through the wire (Figures 2, 1:). The push button P3 (Figure 2), when depressedcloses at the bridge 32" carried by its a plunger, circuit to thesolencld 0.28", which is in the circuit or the wire aand or the wire 1! already traced and holds the push button P3 in deprmsed position, until division becompleted, current to the solenoid (2.28'" then being broken in as the wire 11 is thrown into open circuit, as described in multiplication, at the conductor ll (Figure 5). The push button PA is then restored to normal position by the spring 8.84" (Figure 2). f s is Depression of the push button P.3 imparts w, initial impulse to the' relays 6.2, C.2",'and the disk 16. An operation in the nature of subtraction follows, after which it becomes necessary to determine whether the remainder be less than the divisor, or whether further subtraction may follow at thehigher columns." This is'accomplished by .the comparator which now will be given a preliminary description as related to .the levers I, I", I', its operation when connected with a conservator being hereinafterwards disclosed. p r The accumulator arms 6|, 6|", BI' (Figure I) carry, each at its extremity a terminal H9, II8' 9' (Figures 1, 14, 1'1) closing circuits of the comparator, whereby current flows from the negative pole of the'source'ZZ (Figures 1, 14) throughthe wire 3-, to a typical conductor H8, for example, atthe base of the accumulator arm 6|, and to the terminalIIS' fixed at the other extremity 01 said accumulator arm, being placed at the left as indicated in Figures 1, 7. The ter minal ua' mayclose circuit according to the angular position or the accumulator armVBI' on any one of the contacts no -12o, which are 40 wired respectively to corresponding terminals I2I-I2l at the-sector I22.

Thesector I22 and the sectors I22", I22

' fixed respectively to the shafts 3', 3", 3' (Figures 2, 14, 17) of the levers I, I", I, are simllar in construction and in purpose. Each sector carries an isolated contact such as I23 (Figure 17), closed in normal position upon a terminal similar to the terminal 121 and capable of en-. gaging the other terminals similar to the terminals I2I -I2I when the sectors are respectively displaced by the levers I, I", I'. The sector I22 carries also a conductor/I2! closing,

. when in normal position, on the terminals When the lever 1' (Figures 1, 11) is deflected the position of the isolated contact I23, relatively to, the terminals I2I-I2I, corresponds to the b wire selected as a numeral oi the divisor, at thelever 1 Assuming that the divisor be 26, and the'lever 'i' be closed "on the wire b", the isolated contact I23 would then close on the terminal I'M. Ii. the first numeral of a dividend or a remainder, were equal to the first numeral 2 oi the divisor, the accumulator arm BI (Figure 14) would then close circuit at the contact I20 through the wire 11, to the terminal I2I and the isolated contact I23. If the first numeral of a dividend orremainder were greater than the first numeral 2 of the divisor, for example, 3; theaccumulator arm 6i would close circuit at the contact I20 through the wire p and terminal' Hi to the conductor I24, whence the current is short-circuited, through the wires 1'), v,

minal' I2I' plate Ill, to the relay C.III, and clutch 0.511; and

a-subtraction follows, a single excess unit in the a dividend or remainder at a higher denominational order, being: greater than any possible divisor at all columns therebelow. i

It the'flrstnumeral oi the dividend or remainder wereless than the first numeral oi the divisor, for example, 1; then the circuit closed by the accumulator arm 8| (Figure 1'7) at the contact I20, through the wire 3), to the terwould connect neither with the isolated contact I23 nor with the conductor I24; no current would flow through the accumulator arm BI to the relay (2.), and clutch 0.6a; and the shafts 58', 58a are not revolved.

If again, the first numeral in the dividend or remainder were equal to the first numeral oi the, divisor, to wit 2, current would flow from the source ZZ, through the wire 8", the terminal III, the conductor 8', the accumulator arm BI, the terminal 9', the contact I20, the wire 9, to the terminal Ill, and through the isolated contact I23 over the wire t to the conductor N8", the accumulator arm 8i" and'the terminal It the second numeral otthedividend or the remainder be greaterthan the second numeral oi the divisor; circuit is closed by the accumulator arm GI" througha wire q-q onto the conductor I24" at the sector I22", whence current flows through the wires :2", v, dp, to the relay C.I0 and clutch 0.5a, If the second numeral oi the dividend or the remainder be less than the second numeral of the divisor; circuit is closed neither on the isolated contact I23" nor the conductor IIIIf', and current rails. If the second numerals oi the dividend and the divisor be equal, circuit is closed through the isolated contact I23", over the wire t" to the terminal III".', theconductor 8', the accumulator' arm BI', to the terminal 9', at the.

lowest order: where again, the numeral of the dividend or remainder maybe larger than the corresponding numeral of a divisor and circuit be closed, on the conductor I24'", and current flow through the wires 0'', v, dp, to the relay C10, and the clutch 0.5a. Should the numeral oi the dividend or remainder be smaller than a corresponding numeral of a divisor, here again, circuit would close on neither the conductor l24' nor on'the isolated contact 123" and current to the relay 0.), and the clutch C.5a, would fail.

Be it assumed, however, that the numeral of v the divided or remainder reflected at the accumulator arm 6I" be equal to the corresponding ,numeral of the divisor. Current would then flow through the isolated contact I23, the wire t', the wire 1:, contact plate II) (Figures 3, 14), wire dp (Figures 3, 1, 14), to the negative poles of the relay 0.") and clutch 0.5a.

The positive pole or the relay C.I0 (Figure 1) is connected through the wires s+ with the source ZZ. When circuit be completed to the relay C.I I) over the wires 1:, db, irom any order or the comparator (Figure 14), the relay C.Ifl closes over the bridge 99 at the relay 0., in the present example the dividend being positive, circuit of the wire dp to the negative pole of the clutch 0.5a whose positive pole is connected through only an initial impulse to the relay C.III since circuit through the wires 21, dp, is forthwith broken, as the accumulator arms BI, 6i", 8I' are displaced. The action of the relay C.III, and clutch 0.5a is however sustained by circuit through the wire u which is closed at the bridges 88, 84, when the relay C.IIl retracts its plunger. This circuit originates at the source ZZ (Figure 1) and passes through the wire 8- (Figures 1, 2) the contact 8 at the master switch I (Figure 2) ,'the wire u (Figures 2, l) a conductor of the series 88 at the wheel 18' (Figures 1, 3), the

bridges 84, 83 (Figure 1. the relay CAO, and.

thence through the wire 8+ back to the source ZZ. The extension of the wire it which leads from the bridge 84 over the bridge 89 at the relay C.II,

sustains circuit to the clutch 0.5a.

- Returning to the operation 598+26, the remainder, after the first subtraction, is 338. The first two numerals 33 of the remainder permit of subtraction by the divisor 26; and current being again short-circuited, through the wires 0, zip,

to the rely CM, and clutch G541, a second subtraction follows, as circuit is again closed. through the wire a at a conductor 88 (Figure 'l) to the relays 0.2, C.2" (Figure 1).

In these successive operations, movement of the timing arm I8 is maintained until it reaches a neutral point between two series of b terminals I (Figure 9) by circuit of the wire a to the clutch C.2I (Figure 1). closed by conductors of the series 8I (Figures 3), as in operations of addition and subtraction.

At the termination of the second subtraction, the quantity in the first order of the divisor is exhausted; a first numeral 2 being developed in the quotient, to be reflected as presently described. The remainder is reduced to 78; and the accumulator arm 6i closes circuit to the 7 terminal I2I, whence circuit is completed neither to the wire v nor to the wire t. Current to the relay C.IIi and clutch. 0.5a fails; and subtraction of the divisor must be shifted to lower denominational orders.

The arc of the conductors 88 (Figur 3) is such. that the circuit through the wire u which sustains the relay 0.), and clutch C.5a (Figure 1) following an initial impulse, through the wires 0, dp, is interrupted during the passage of .the arm 18 from the terminals of the wire I)" (Figure 9) to a neutral position between series; permitting, thereby the relay C.III (Figure 1) to release its plunger, between successive subtractions, unless the accumulator arms II, 6|", BI' have, in the meantime, been arrested at contacts which again close circuit to the relay C.III through the wires v, dp. If at the termination of asubtraction, the remainder permits of further subtraction at the same columns, circuit remains closed to the relay C.III through the wires 0, dp. If the remainder does not permit of further subtraction at these columns, the

plunger of the relay C.IIl is released, and closes at bridge 88 (Figure 1), circuit to the negative pole of the clutch C16. As the arm 18 passes from a terminal of the wire I) to a neutral position between series, circuit is closed by a conductor of series 88 (Figure 3) through the wire a:

- (Figures 2. 1) already traced. to the positive pole of the clutch C38 (Figure 1), completing, in the event the plunger of the relay C.I8 be so released, circuit to the clutch C16. So energized, the clutch C18 clutches the transmitter 48 and shifts, as in multiplication, the circuits of the c and e wires to the relays of lower orders: and

permits, thereby, the divisor established at the levers I, I", in the present illustration,to operate respectively on the tens and units orders of the mechanism, having passed from the hundreds and the tens; the wires e c' to relays 0.2, C.4', being thrown into open circuit at the disk 48 (Figures 1, 4). v v

The divisor in the present example being 26, and the remainder nowfoeing 78, three subtractions are permitted before an eventual second shift of circuits. Theremainder 78 is reduced to zero by such three subtractions; and 3 appears as the last numeral in the quotient consistently with the equation 598+26=23. As all the accumulator arms 6|, 8|", 8I' (Figure 13) are,

then at zero, current to the relay C.I0 and clutch 0.5a fails.

To provide for dividends not exactly divisible by their divisors, lower orders may be provided, as disclosed in copending application Serial No. 44,159, which carry the quotient into decimal fractions, before circuits through the c, e. wires finally may fail.

When the transmitter 40 (Figure 1) switches the c, e wires downward onto 0.4, 0.1 relays of lower orders, it is necessary to shift progressively the P, (1. 1' wires of the comparator (Figure 14) upwards to connections at the levers where the divisor is established, in the present example, to connections at the levers I, I" (Figure 2); 'in order that the remainder '78 may be compared with the divisor 26. The wires p-p leading from the accumulator arm 6i are accordingiy,.

switched into open circuit, the wires q-q leading from the accumulator arm 8|" are switched to the terminals I2I-I2I at the lever I, and the wires r-r" leading from the accumulator 8I' are switched to the terminals I2'|-I2|? at the lever I". This is automatically accomplished by means of conductors carried on the disks 48 40 48 shown in Figures 1 and 14.

The wires pp are shown in Figure 14 as carried in the cable pp over the fixed benches I88, I88, and the conductors I5I-I5I at the disk III) to their corresponding terminals I2I-I2I' at the lever I, The wires, qq are similarly shown as carried by the cable qq over the benches I85, I35, and the conductors I52-I52 at the disk 40 to the terminals I2l-I2I at the lever I": and the wires.r-r are shown as carried in the cable rr over the benches I, Hi and conductors i -I58 at the disk 40, to the terminals I28-I28 at the lever I'. At the first shift of e, c, and o circuits above described, the disk 40', likewise displaced, throws the wires xi -p into open circuit at the bench I88; the circuits of wires q-q are switched at the benches I88, ill at the disk 40 and carried in the cable pq, into connection with the p-p wires carried by the cable pp and leading to the terminals 121 -121- at the lever'I'; and the circuits of the wires r-r' are similarly switched at the benches I42, If at the disk 40 and carried in the cable q'r, into connection with the qQ -q' wires carried by the cable qq'. leading to the terminals I2|-I2I at the lever I". At the same time, circuitfrom the source ZZ through the negative wire sto the accumulator arm 8| is broken at the conductor I3I, and is closed from the wire sthrough the conductor I81 to the accumulator arm II". The wire t leading from its contact at the lever I is broken to the accumulator arm ii", at thethereby soshifted, that the divisor established at the levers I, I. for example, may be compared with the remainder latent at the accumulator arms 6|", GI'. A second shift would throw the wires q q into open circuit atthe benches I36, I36 and the wires rr carried in the cables pr,'pq, into connection with the wires We leading to the terminals I2I-I2I9 some I set up at the lever I, with a dividend or remainder latent at the accumulator arm 6I" At the first shift of, comparator circuits, when the wires 1 4 which lead from the accumulator arm SI', are switched to the terminals M1 421 at the lever I" and the wire 15 is thrown into opencircuit; then in order to establish a circuit from the wire t", which would be'active did the numeral of the dividend orremainderglatent at the accumulator arm 'IiI' equal the numeral of the divisor at lever I", the conductor I59 carried by the disk 40 closes the wire t" at the contacts I60 through the wire 'vt""to the wire p. At the second shift of comparator circuits, when the wires 7 -1 lead to the terminals I2I-I2Iand wire 15" is thrown into open circuit; then inorder to establish circuitfrom the wire t, which would be activedid the numeral of the dividend or remainder latent at the accumulator arm EI' equalthe numeral of the divisor at lever I, the conductor I6I carried by the disk 40 closes the wire t at the contact I62 through the wire vt, to the wire 12. Y

It has been assumed that the quantity in the highest order of the dividend or remainder, is=- reduced to zero, before circuits are shifted by the transmitter 40 (Figure 1). A numeral may,

I relay, C.I'Ilj and thence :to the source ZZ. I

If the accumulator-arm 6|", at the next lower order, were torefiect a numeral in the remainder,

after shift of circuits'to orders therebelow; the 5 wire as" closed at the'terminals I40, I40 (Figure If, on the contrary, a numeral exists in the highest order of the remainder, after shift of the divisor to lower decimal orders, and the accumulator arm 6| does not close circuit at the contact I30" to the relay 6.34; the plunger thereof remainsreleased, and closes circuit" at its bridge, through the wire ac to the wire 17, and

' thence through the wire dp to the relay C.Ill,

as already traced. The current so passing through the wires av, 12, dp, energizes the relay Q), and prevents a further shift of circuits by the transmitter/40 (Figure 1),-until subtraction of the divisor from the remainder, reduces to zero the numeral in the highest order of the remainder and carries the accumulator arm BI" back to zero.

The circuit which may so .be closed by the relay 0.34 originates at the source ZZ (Figure 14); and passesthrough the-wire rias already,- traced, the bridge at the plunger of the relay, -C.34',-the wires an; 1), dp, already traced, to the through the wire s+ back 14) would m similar manner, operate upon the relay C34", when, at the second shift of circuits" by the transmitter 40, the contact I59 carried at its periphery by the disk 40 closes, at the terminals I 58, circuit to the accumulator arm 6|" through contact I58 and the extension of however, remain in such highest order or subsequent *higher orders, aftera shift of circuits;

- and must be subject to the subtractions which ensue. Provision for such contingency, now will be described.

At the first shift of circuits by the transmitter 40 (Figure 14), circuit through the wire sis broken at the fixed terminal I32, disk ,40?, but

terminals I33, I33, to an extension as leading to a terminal at which circuit may be closed by f the relay C.34'.- The disk 4I'I revolving, carries the' contact plate I attached to the periphery of the disk 40, to the terminals I56 and closes circuit from the wire as, to the extension of the wire sleading to the accumulator arm 8| as circuit to this extension of the wire sis broken at the terminals I32, I32 and the circuits of the wires pp are broken at the bench I30. The negative pole of the relay 0.34 is connected with the contact I20" (Figure 17) its positive pole, with the wire 5+. The circuit so closed originates at the source Z2 and passes through the wire 3-, (Figure 14),, the conductor I3I, the wire as, the contact plate I55, extension of the wire s, conductor I I8, the accumulator arm 6 I contact I20, the relay 0.34, and thence through the wire 8'' back to the source ZZ. If, when circuit be shifted by the transmitter 40'. (Figure 1), the

, accumulator arm BI be at zero, circuit is com- I tached, circuit through-the wire (1;

the wire it. So longas the accumulator arm 6i" were not restored to zero position by subtraction of the divisor from the remainder, circuit would be closed at the bridge depressed on the plunger-of the relay 0.34"; and current would flow from the wires as", av", through the wires 11, dp, to the relay C.I0; and this circuit would be broken only when the accumulator arm 6|" is restored to zero, where it closes circuit to the relay 34".

'If the dividend reflected by the accumulator arms 6|, BI", 61' (Figure 2) be a negative quantity, the direction of their movement must be clockwise, in response to the subtractions of the divisor, which ensue. This is automatically accomplished through the relays C.I I, C.I2 (Figure 1), as now will be described. is switched by the conductor I3I at the fixed 50 In division, the wire dr being inactive, the plunger of the relay C.I2 is released; and may close, atthe bridge I 0| (Figure 1) thereto atto the relay 0.. When the dividend is positive, circuit through the wire d is open at the conductor 90 (Figures 1, 8), as hereinbefore described; and the plunger of the relay 0. (Figure 1) being released, current flows through the wires dp and u over the bridge 99 at the relay 0. to the clutch 0.5a, resulting in subtraction'at the accumulator arms SI', 6|", SI', withmotion in direction opposite to clockwise. When the quan- 'tity constituting the dividend is negative, circuit -is closed at the conductor 90 as hereinbefore described, through the wire d, already traced, over the bridge IOI at the relay C.I2, to the positive pole of the relay 0., the negative pole whereof, as hereinbefore described, being connected, through the wires s-, back to the source ,ZZ. The relay 0. so energized contracts its plunger, breaking at the bridge 99 the circuits of the wires dp, u to the clutch 0.5a; and switches, at the bridge 98, the circuits of the wires dp, u to the clutch 0.5. Motion in clockwise direction a positive dividend, save is thereby transmitted to the accumulator arms 6|, 8|", Ol', and to the clutches-0.2", 0.2" at which the action oftransier mechanism, hereinbeiore described, permits or operation exactly similar to the subtractions oi the divisor from accumulator arms 2|, 41'', ii' is reversed.

The dividend and remainders being negative quantities, the angular step displacement of the accumulator arms 6|, 6|", Cl', must now read from zero to the left, in order to permit the comparatortKFigure 14) correctly to determine when the remainders are reduced to less than the divisor; and shift of circuits be duly effected by the transmitter 40 (Figure 1). This is accomplished by means 01 the relay 0.24 (Figures 1, 17), which is .provided with a triiurcated plunger with bridges attached to each of its three branches. Extending from the contacts I22 |2l at the accumulator arm 6l' to the ter minals at the left branch of the relay 0.24, are the wires r -r (Figures 1, 14) shown as carried in the cable rr. The wires (l -q shown as carried in the cable qq are similarly extended from their contacts I 26 -426 at the accumulator arm CI", to terminals at the middle branch of the coil 0.24; and the wires p -p carried in the cable pp are shown as extended from the contacts 120 420 at the accumulator mil to terminals at the right branch of the relay 0.24. At the opposite sides of the several branches are terminals from which the p, q, and r wires are extended through the transmitter 40 (Figure 1) to their respective terminals at the sectors 2', I22, I22"' (Figures 2, 14). Thewires p, q", 1, extend to the terminals i2l, I22", I29, without passing over bridges of the relay 0.24.

The relay 0.24 (Figure 1) is in the circuit of the wire d already traced, its negative pole being connected through the wire s-, back to the source ZZ. When, as already explained, the dividend is a positive quantity, circuit is not closed by the switch 90 (Figure 8') on the wire d; and the relay 0.24 accordingly is not energized. When, on the other hand, the dividend be negative, circuit isclosed through the wire d; and the plunger of the relay 0.24 18 retracted. When the dividend is a positive quantity and the plunger 01 the relay 0.24 is not retracted; circuit may be closed from the contacts MI -I24,

for example, by the accumulator arm 6|, through the wires p p' respectively, over the bridges carried by the right branch of the plunger of the relay 0.24 to the terminals I I20 at the lever I. When the dividend is negative and the wire d active, the plunger of the relay 0.24 is retracted; the circuits from the contacts l2Ii -l2ll closed by the accumulator arm I are transposed, and the wires p -p of complementary ordinal number are switched to .the terminals l2l -l2l' (Figure 1'7). The circuit oi the wire p remains connected with the terminal Hi". The circuit from the contact I22 to the terminal l2l', for example, is broken at the lowest bridge on the right branch or the relay 0.24, and closed at the highest bridge thereon, to the terminal I21. Circuit from the contact I2. is similarly switched from the terminal l2", to the terminal l2". The operation is similar at all branches of the plunger; and

the circuits through all the p, q, 1 wires are simultaneously switched to their respective complementary terminals at the sectors I22, I22", I22'. The comparator is then in a condition to determine when, in division oi negative quanthat themotion oi the tities, the remainder is reduced to a quantity less than the divisor.

The quotient is reflected at the quotient arms 21', 21", 21" (Figure 2), corresponding respectively to hundreds, tens and units and rotated through the action of the solenoids '0.2l', CJI", 0.3l The relay CJO-is in a circuit which originates at the source ZZ and passes through the wire s- (Figures 1, 2), contact plate 9 at the master switch I, the wire u, already traced, over the bridge 96 when raised atthe relay 0.), the relay 0.30, the wire 9 (Figures 2, 1),the bridge when raised at the relay 0.) (Figure 1), a conductor of series 86 at wheel 16 (Figure 3), the highest bridge at the push-button P3 (Figure 2) and through the wire s+ (Figures 2, 1) back to the source ZZ (Figure 1).

When the push button .-P.3 (Figure 2) is depressed at the beginning of division, assuming that the divisor be not greater than the dividend disk Ill (Figure 5) oi the transmitter 40 (Figure 1). The solenoid 0.3! (Figure 2) so energized retracts its plunger which terminates at its upper extremity in a latch 24 operative on the teeth ,of a disk 25' mounted on a shaft 28' in common with an arm 21', corresponding in the present specification to the hundreds order of a quotient. The arms 21", 21" corresponding, respectively, to the tens and units orders, are exactly similar in operation and construction to the arm 21'. The arm 21, according to its angular deflection, closes circuit to a series of contacts 2242 (Figures 2, l8) placed in circular position relatively to the axisof the arm 21.

In normal position the quotient arm 21' (Figures 2, l8) closes circuit on the contact 29. Depression of the push button PJ transmits current 'to the relay 0.", which retracts its plunger and energizes the solenoid CJI'. The solenoid 0.2l' retracts its plunger and rotates the arm 21' a single step, into position where it closes circuit at the contact 28', signalizing a first subtraction of the divisor from the dividend, at its hundreds order, and a unit in the hundreds order of the quotient. As the wheel 16 (Figure 1) revolving, closes at the beginning of each, subsequent subtraction, circuit through the wire a, at successive conductors (Figure 3), the arm 21' (Figure 2) is progressively advanced by the solenoid 0.2l' to the contacts 294! (Figure 18), until the remainder at the upper order is reduced to less than the divisor and the transmitter 40 (Figure l) shifts the operation to lower decimal orders, as

hereinbefore explained. When circuits are so shifted by the transmitter 40 (Figure 1), circuit to the solenoid 0.3 l through the wire 0' is broken at the contact 42 (Figure 5) and is closed by the contact 42, through the wire 0" to the relay 0.22" (Figure 2) and over the lower bridge thereof to the solenoid 0.2l", which in manner similar to that of the solenoid 0.3l', operates upon the arm 21", causing the arm 21" to clou progressively on the contacts 3040, corresponding to numerals of the quotient in the order of the tens. If, when circuits be so shifted, the remainder still 'be less than the divisor, and accordingly, no cur- 44,159. The-solenoid shifts an inking ribbon 23 3- rent flows through the comparator (Figure 14) to oi dii1'erent colors, causing the recording mechas the relay Q); the circuit of the wire u remains (Figure 2) and thence to the solenoid C.3I The arm. 21", will remain, therefore, closed on the contact 39. The next shift of circuits by the transopen at the bridge 95 (Figure 1) to the relay CJI! order, by advancing the arm 21" progressively at the contact 3I-3I. The wires leading from contacts 2949 at the quotient arm 21' are shown as carried in the cable g1 (Figure 2). Wires from similar contacts at the respective quotient arms 21", 21' are carried in the cable 917", gfi"f. The said cables p17, of", 9'17" lead to the push button P.1', depression of which, closes circuits of their several wires, and causes the quotient to be recorded by mechanism disclosed in copending application Serial No. 44,159. Should it happen, at the beginning of an operation, that the divisor be greater than the higher orders of the dividend; circuit would be broken at the comparator (Figure 14) to the relay C.I0. Circuit to v the relay (3.3!) would remain open, and the initial depression of the push button P.3, would operate no displacement of the arm 21', 21", 21". Shift of circuits would however, be effected, by the transmitter 40 (Figure 1) in manner hereintofore disclosed; and the operation of division be performed at lower orders.

The positive or negative quality of the quotient is revealed, through the action of the relays CA6,

circuit which originates at the source ZZ, and passes through the wire s-, contact plate 9 at the master switch 1, and the wire dn to the relay C.I 6, and thence through the wire s+'back to the source ZZ. The wire dn is closed, and the relays C16, 0.", C.I1' are active, only in operations of division. When the divisor is positive, a negative current is closed on the wire 2', by the master switch 1 (Figure 2) at the contact plate 9. When the divisor is negative, a positive current is closed to and from which banks, quantities developed 7 is provided, which operating with the relay C.I1

upon a common plunger, holds this common plunger in stick if retracted at the beginning of an operation by the relay C.I1. The relay C.I1' is in the circuit of the wire dn, already traced,

its positive pole being connected through the wire 8+ when its plunger is retracted, back to the source ZZ.

Conservation of quantities Referring to Figure 11, two banks of relays A.,B. are shown, external to all calculating units,

at a calculating unit (Figure '1) may be transferred, through the switch member I93 which is detachable and may be closed'at volition on switch members such as either I934! or I93b.'

These banks A., B.', may be termed conservators, and may exist in any number (Figure 13).

A bank such as banks A., B. (Figure 11), may comprise relays corresponding to any required number of denominational orders, either integral or fractional.

- C.I1, C.I1' (Figure 1). The relay C.I6 is in a by the master switch 1, on the wire i at the contact plate I2. The wire i passes over the bridges 209, 2"), depressed, to a pole of'the relay C.I1. The other pole of the relay. C." is connected with a wire dn', which leads from the bridge 91 fixed to the upper extremity of the relay 0.,

over the bridge 2 closed at the relay C16.

When the dividend is positive, the wire d is inactive, as hereintofore explained; and the plunger of the relay 0. is released. A negative current is then closed at the bridge 91, through the wire dn' over the bridge 2| I, to the relay Q". When the dividend is negative, the Wire d is active and the plunger of the relay C.I I'is retracted, closing at the bridge 91, a positive current from the source ZZ, through the wire and the wire fin to the relay C.I1. If the dividend and the divisor are of the same quality; the relay C.I1 remains inactive. If the dividend and the divisor are of difierent qualities, 2. negative current flows to one pole, and a positive current flows to the opposite pole of the relay C.I1, which retracts its plunger upwards and closes at the bridge 201, a positive .current from the source ZZ and the wire 8+ to the wire (1" leading to thesolenoid 0.64 (Figure 19) which is an element in recording mechanism fully disclosed in copending application Serial No.

Quantities may be conserved as sub-totals or for reference; or they may function, as presently described, in computations at the calculating unit, independently of such usual controls as the levers, I', I"; I', 2, 2'.', 2' (Figure 2); the relays such as shown at the banks A. or B. (Figure 11), closing all circuits normally operated ,by said levers and serving as substitute controls.

Circuits may be established between a calculating unit (Figure 1) and banks such as the banks A., B. (Figure 11) through switch members I93, I93. Each bank may be switched into the circuit of numerous calculating units, and may operate simultaneously in similar or dissimilar computations upon all (Figure 13). A quantity reflected at the accumulator arms 6|, 6|", 6I' (Figure 1) may be transferred to any selected bank such as the banks A., B. (Figure 11) from any calculating unit such as shown in Figure 1, by closing switch members similar to the members I93, I930 and depressing a push button such as the push outton P.1 (Figure 1). Quotients may similarly be transferred to a conservator by depressing the push button P.1' (Figure, 2), whose lowest bridge is shown in Figure 1.

Quantities transferred to banks, such asthe banks A., B. (Figure 11), may subsequently be made to operate upon a calculating unit (Figure 1), by again closing circuits at the switch members I93, I93, I93a, I93b (Figure 11), the circuits closed through the switch member I93, substituting the circuits normally closed at the levers I', I", I (Figure 2), and the circuits closed through the switch member I93 (Figure 11) substituting, when a quantity conserved serves for example, as a multiplier, circuits normally closed at the levers 2, 2", 2' (Figure 2). The position of the master switch 1 (Figure 2) determines the operation which shall be performed; and the operation is initiated according to its nature, by depression of a push button P.I, R2, R3.

The relays in the highest tier in any bank,

such as the banks A., B. (Figure 11) correspond to hundreds: the relays of the middle tier, to tens: and the relays of the lowest tier, to units. Carri d in the cable I (Figures 1, 11) are the wires (1 1' corresponding to the numerals to 9, leading respectively from the contacts 200 to 200 (Figure 20), placed in circular position in the pathway of the accumulator arm 0i. Carried in the cable ,0" (Figures 1, 11) are similar wires leading respectively from corresponding contacts at the accumulator arm Ii"; and carried in the cable 17", are similar wires leading respectively from corresponding contacts at the accumulator arm 0| The circuits of the cables 11'. i7", 17"", normally lead to' the recording mechanism disclosed in copending application Serial No. 44,159. Depression of the push button PJ (Figure 1) breaks at its three highest bridges,

assures to the conservators through I! wires of complementary index number; shift of circuits being eflected by the relay C." (Figure in manner of the relay 0.20 (Figure 1'7) hereinbefore described.

said circuits to recording mechanism and closes the wires af-af, carried by the cable 17', respectively to the positive poles or the relays 0.01" to 0.01 in bank A. (Figure 11), for example, or

similarly to other banks; the said corresponding wires carried by the cable i", to the respective relays C.00-C.06, and the said corresponding wires carried by the cable 0". to the respective relays GH -0.00. The negative poles of the connected with the wire 3' back to the source ZZ (Figure 1). 7

At the three bridges of the push button P.| (Figure 1) immediately below the three bridges traversed by the cables f. 17", .U'", circuits are closed from the wire s+ leading from the source ZZ, to'the wires m. m", m', shown ascarried in the cable mm (Figure 1), to the. conductors 210', 210", 210" (Figure 7), at the accumulator Circuits may similarly be closed from the contacts 29"-29 at the typical quotient arm 21' (Figures,2, 18) and carried in the cable a from the similar contacts 0040, at the quotient arm 21", carried in the cable m7"; and from the similar contacts 0I-0| at the quotient arm 21", carried in the cable qfl'. Depression of the push button PJ (Figure 2) breaks, at its three highest bridges, circuits to said recording mechanism; and closes circuit through the wires carried by the several cables M". (117". 017' (Figure 2), to the switch members i93, (93a, for example, where circuit may be closed through the extension wires carried by the cables F, If", ,fi' (Figures 2, 11) to the relays at the bank A. (Figure 11). Circuits are thus closed respectively from the contacts 2949 (Figures 2, 18) at the quotient arm 21', to the relays CAN-0.01 (Figure 11) from the contacts 0040 (Figure 2) at the quotient arm 21", to the relays CAN-(2.00 (Figure 11); and from the contacts 0l-0l (Figure 2)v at the quotient arm 21', to the relays C.0 0-C.05 (Figure 11) Depression of the push button PJ' (Figure 2) closes at the three bridges next below the bridges traversed by the cables at, ad", 4117'". circuit from the wire s+ through the wires mn', mn", mn-"', shown as cah'ried in the cable run, to the respective quotient arms 21', 21", 21", which, according to their angular deflections complete circuits to corresponding relay at the bank A, (Figure 11).

It now, for example, the quantity 845 be reflected at the accumulator arms 9|, 9|", Ol'" (Figure 1); the accumulator arm 0|, when the push button PJ (Figure 1) is depressed, completes circuit to the relay 0.9! (Figure 11). The

accumulator arm 0|" (Figure l) completes circuitto the relay 0.09 (Figure 11); and the acc The positive or negative quality ofa quantity transferred-from. the accumulator arms 0|, 9|", 0|"' (Figure 1) is established in the bank A. (Figure 11), for example, at the relay 0.0011, the negative pole of which is connected through the wire swith the source 22. The wire d, closed at the conductor (Figures 1, 7, 8) as hereinbefore described, when the quantity reflected at the accumulator arms 0|, 0!", 0l" is negative, closes over the lowest bridge depressed at the push button P.| (Figure 1), and overthe next to lowest bridge at the relay CAO, the wire dz leading to the positive pole of the relay (3.00s. If, when the push button R1 is depressed the wire at is closed at the conductor 90 (Figures 7, 8), circult is completed through the wires d, dz to the relay (a, which, held thereupon in stick by current fromth'e wire uf, closes a positive current from the wire u! at the bridge 2" raised, to

the wire 1. If the quantity transferred be posi-' tive; circuit through the wire d to the relay C.00a is open at the conductor 90, and a negative current is closed from the wire aat the bridge M2 to the wire 1'. The wire 1' is accordingly negative, when the quantity conserved be positive; and positive, when the quantity conserved be negative, to efiect presently described.

In corresponding manner, the positive or negative quality of a quotient, (Figure 11) may be reflected at the relay C.00a. When, as hereinbefore described, the quotient be negative, circuit is closed at the bridge 201 (Figure 1) from the wire s+ to the wired". Depression of the push button P.|' (Figure 2) closes circuit of the wire (1'',

over the lowest bridge raised, at the relay GM, to the wire dz which leads, as above described, to

the positive pole of the relay C.00a (Figure 11). If, accordingly, the quotient transferred be a negative 'quantity, circuit is completed at the bridge 201 to the relay 0.001;, which closes at the bridge 2l0 positive current to the wire 1'. If the quotient transferred be positive, circuit to the coil 0.004 is open at the bridge 201; and a negative current is closed to the wire i, at the bridge A quantity having been transferred to the bank A., and its quality there established at the relay 0.00s, (Figures 1, 11) connection between the calculating unit and the bank A. may be broken at the switch members 190, I900 (Figure 11) and the quantity conserved at the bank A., remains indefinitely available for future operations.

If it be desired-to restore the relays of the bank A. to zero position, the switch member I90 being closed on the switch member I900, the push button P. 0 (Figure 1) is depressed, closing at its bridge circuit from the wire s+ to the relay 0.00:: (Figure 11), whose negative pole is connected through the wire awith the source ZZ. The re- 

